NL6503406A - - Google Patents

Info

Publication number
NL6503406A
NL6503406A NL6503406A NL6503406A NL6503406A NL 6503406 A NL6503406 A NL 6503406A NL 6503406 A NL6503406 A NL 6503406A NL 6503406 A NL6503406 A NL 6503406A NL 6503406 A NL6503406 A NL 6503406A
Authority
NL
Netherlands
Prior art keywords
valve
ram
pressure
line
fluid
Prior art date
Application number
NL6503406A
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of NL6503406A publication Critical patent/NL6503406A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
  • Press Drives And Press Lines (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
NL6503406A 1964-03-20 1965-03-17 NL6503406A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11932/64A GB1098628A (en) 1964-03-20 1964-03-20 Improvements in or relating to advancing roof supports

Publications (1)

Publication Number Publication Date
NL6503406A true NL6503406A (de) 1965-09-21

Family

ID=9995302

Family Applications (2)

Application Number Title Priority Date Filing Date
NL256189D NL256189A (de) 1964-03-20
NL6503406A NL6503406A (de) 1964-03-20 1965-03-17

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL256189D NL256189A (de) 1964-03-20

Country Status (5)

Country Link
US (1) US3313211A (de)
DE (2) DE1205034B (de)
FR (1) FR1268264A (de)
GB (2) GB967163A (de)
NL (2) NL6503406A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458672B1 (de) * 1951-01-28 1970-02-26 Becorit Grubenausbau Gmbh Steuerung für einen wandernden hydraulischen Strebausbau
DE2901054A1 (de) * 1979-01-12 1980-07-17 Salzgitter Maschinen Ag Vorlaeufiger streckenausbau fuer durchbaubetriebe in strecken des untertaegigen bergbaus
GB2116618B (en) * 1982-03-06 1985-11-20 Dowty Mining Equipment Ltd Mine roof supports
DE202010001750U1 (de) 2010-02-02 2010-06-10 Karl Hamacher Gmbh Untertägige Medienversorgungsanordnung
CN110333017B (zh) * 2019-07-29 2020-12-01 宿州市金鼎安全技术股份有限公司 一种基于光纤光栅传感器的煤矿巷道顶板应力监测装置
CN110778346B (zh) * 2019-11-15 2020-07-03 西部黄金伊犁有限责任公司 一种用于发生矿井冒顶时的保护装置
CN111878140A (zh) * 2020-06-05 2020-11-03 范文 一种薄煤层开采用液压支架

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069548B (de) * 1959-11-26
US1994974A (en) * 1930-06-21 1935-03-19 Oilgear Co Differential resistance valve
US2714505A (en) * 1948-05-01 1955-08-02 Joy Mfg Co Apparatus for mine roof control
US2657028A (en) * 1949-06-15 1953-10-27 Joy Mfg Co Walking jack
GB735294A (en) * 1952-03-04 1955-08-17 Bolton & Company Engineers Ltd Improvements relating to fluid-operated roof-supporting units for use in mines and like places
GB742850A (en) * 1952-12-06 1956-01-04 Hydrauliques Pour L Ind Minier Improved device for supporting the roofs of mine galleries
GB745679A (en) * 1953-07-08 1956-02-29 Dowty Auto Units Ltd Improvements in mine roof supports
AT184539B (de) * 1954-04-12 1956-01-25 Kloeckner Bergbau Victor Icker Wandernder Ausbau mit durch ein Druckmittel betätigten Ausbaugespannen
GB823128A (en) * 1955-02-23 1959-11-04 Dowty Mining Equipment Ltd Improvements in and relating to mine roof support systems
US2859022A (en) * 1955-04-04 1958-11-04 Dowty Mining Equipment Ltd Hydraulic roof supports and conveyor feed jacks
FR1153880A (fr) * 1955-04-04 1958-03-28 Dowty Mining Equipment Ltd Installation et appareil de soutènement hydraulique pour mines
FR1148920A (fr) * 1956-03-21 1957-12-18 Commande automatique de mise en marche d'un ou d'étançons automoteurs
FR1184882A (fr) * 1956-10-19 1959-07-27 Eisenwerk Wanheim Gmbh Soutènement mécanisé à étançons hydrauliques groupés par groupes doubles
FR1190532A (fr) * 1957-07-05 1959-10-13 Dobson Ltd W E & F Perfectionnements apportés aux supports de plafonds pour mines souterraines
FR1201174A (fr) * 1957-08-10 1959-12-29 Gewerk Eisenhuette Westfalia Procédé et dispositif pour la commande d'un soutènement hydraulique, utilisable notamment dans les mines
DE1131626B (de) * 1958-04-14 1962-06-20 Kloeckner Werke Ag Verfahren und Vorrichtung zur Steuerung des Raub- und Setzvorganges von hydraulischen Strebausbaurahmen
US2989950A (en) * 1958-06-04 1961-06-27 Lockman Nathan Pneumatic control device
FR1271386A (fr) * 1959-10-12 1961-09-08 Coal Industry Patents Ltd Supports du toit des galeries de mines
FR1337134A (fr) * 1961-10-30 1963-09-06 Dowty Mining Equipment Ltd Perfectionnements aux supports de toit de mine
GB991009A (en) * 1962-06-07 1965-05-05 Dowty Mining Equipment Ltd Mining apparatus

Also Published As

Publication number Publication date
GB1098628A (en) 1968-01-10
DE1292605C2 (de) 1973-05-17
GB967163A (en) 1964-08-19
NL256189A (de)
DE1292605B (de) 1969-04-17
US3313211A (en) 1967-04-11
FR1268264A (fr) 1961-07-28
DE1205034B (de) 1965-11-18

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